Mold for concrbte stringers



April 13 1926, 1,580,281

D. w. BowE MOLD FOR CONCRETE STRINGERS Filed Ju ly 7. 1923 2 Sheets-Sheet 1 5" ,Z7 7

7 1 7J 3 i Z1 /Z if Z ff g3 ath-yc nag April 13, 192s. 1,580,281 l A D. w. BowE MOLD FOR CONCRETE STRINGERS Filed July 7. 1923 2 SheetsvSheet 2 af if fr' 221 2 1 2 'Y 'h- 735 1f lf .L jfk-abf o fff/ PatentedAprr13, 1926. l Y

I UNITED srArEs lMT,sur

praticien mainly/1, ima sm, no, empre,

TooZZ 'whom t may concern: ,i r The mold com rises. in additionto..V the Be it known, that. I, DAvrnW. a base, a body inclndingfsides7 'resting'onthe 55 citizenof the United States, residing/ at Demembers 4,. between thecleats 5.and 70.` ,troit, in the county of Wayne and State .of Fixed,- outer topf sections 8y are. secured, at 9A Michigan, 'have invented a new and useul tothe slides 7 .Y The body of-i the moldl in- Mold for Concretel Stringers, of vwhichv the cludes ends 10 seated. on they members4 and Vfollowing is a specification. 4 inwardly ofthercleats 2. The fixed outer 60 This' invention aims to provide a ysimple top sections 8 are secured-,at 11Ito the ends ,means whereby a` concrete railway Stringer 10, Inner. fixed top sections/12` are .spaced 10 or `like structure may be fashioned and reromltheltopqsections S-and aresecured at invention apporta-ins..

inforced. 14 tothe endsglO.; Movable top sections 15 It isiwithin the province of the disclosure are disposed between' the top sections 8 vand 65 to improve;y generally and ,tof 'enhance'. the ,thetop sections 1 The, `movable top sec 1 utility of devicesot that type to whichthe tions `'15 areconnectedfby hinges. 16 to the I,

vouter top-sections/S and restupon the'ends Viththe,` above and other' objectsfin View, 10. Openings 17 aredformed in the topzsecwhichwill appear as the description protions-1,2 andflvatthe meeting-,edges thereof.v 70 I' ceeds, the invention residesy in the combina- `rTheopenings v1,7 preferably are formed in -o tion and' arrangement of parts'and inthe one?` top,` portion ofthevbody ofthe mold,

details of construction hereinafter described on1y, ,asfindicated infFigures- 2l and 1'.. Eyes spirit of thefinvention: v

`and claimed, itbeingk understood that', v vithin .71 arefixed to the inner longitudinalimem- 'the scope otwhatis claimed,.changesy 1n the ber 4*'of`1the base and are adaptedto been- 75 precise embodiment of the invention shown V,1g-aged by hooks 72 ypivoted on the ends 10, can be inade Without"y departing `from the to hold the body ofthe mold `on'tlie base of 4 thefmold.. When the body of. the moldis l In the accompanyingfdrawings: v v, j removed from the finished product,` the-eyes v Figure 1 isaplan; Figure 2 is a' section v71 may begused to lift ythe inner longitudinal 80 Von the line 2r-2i1ofz Figure 1;, Figure 3 isa .member 4a, and Withjit,y the finished product section on the line 3;-3 lof-Figure 1; Figurel which is'formed in the mold.V Eyes '73 are 4is asectiondshowmg ai modification; Figureusecuredto the fixed. outer,A sections 8A of ,the

5 is an eleva-tion showingoneof thex clamps; mold top and, may be tolift lthe body Figure 6 is a section 'taken through ythe of-,th'e mold-ofil the base and off thefinished .85 clamp; Figure 7 isa cross sectionshowing'a fr )roduetl j f y Y f modification. 'Thenumeral 18 marks a rectangularframe Referring Yto Figures'i'rl, 2 and3, 'the l. deincluding end bridges 19. 'The end bridges vice is shoivvn as comp sing a base including :19` rest on theend members `10 'of themold outer longitudinal.. members `4-and an inner and areheld thereon by dowel pins 2.1. The 90 longitudinal member .4 therebetween-,ff the -vendbridges 19iof theyframelS are connected outerlongitudinal members being secured to byv longitudinal barsv 20 Whichmay angle Vtransverse stringersi and the inner long-imembers; Intermediate transverse bridges tudinal member: being vfree, to serve as a 22areconne'cted tothe longitudinal bars 20. palletY on which the finished product may be bridgel 22 comprises a bottommember 9 5 removed. The members-.mand @have trans- 23 and-a top member ory arch 25;/ [The parts verse end cleats2... Adjacent toutheiredges 23 and 25 of eachv bridge varevaconnected by the members 4-and'certain of the stringersi. securing elements 29, as are the constituent carry suspension vdevices 3 whereby` theen- Vparts-'of 'the end bridges 19, The bottom tire mold, either filledA or empty, may; be members 23 of the bridges 22have outwardlyV 100 handled conveniently.,l Guter longitudinal extended feet 24-o'verlapped on the top mem- Y cleats am secured to the: members 4, Vand vbers k.1201i the body of thefmold. Thelfeet 24 innerl cleats 5. are secured thereto. A multihave slotsi27, receivingsecuringelements 28 part {iller is secured to the members 4 and v(bolts) carried bythe top members' 12,' of 4 and is adapted to forina concavity. inthe the bodyy of the mold.y The'lon itudinal'bar's 105 bottom of the finished product. y20k are connected by securing e ements 26 .to

the top members of the bridges 22 and 19. Longitudinal bars 30, which may be angle members, are held by the securing elements 29 on the bridges 19 and 22 and are disposed in close relation to the inner edges of the top members 12 of the mold.

Longitudinal reinforcing rods 31 are l0- cated within the mold. The rods 31 pass through crossed transverse bars 32. The lower ends of the bars 32 are engaged with the sides 7 and rest on the cleats 5. Tlre upper ends of the crossed transverse bars 32 abut against the longitudinal bars 30 of the frame 18. One of the longitudinal reinforcing rods 31 passes through the bars 32 at their' place of crossing. That rod and the cross bars 32 are held together releasably but securely by separable clamps 33. The ends of horizontal ties 34 are connjected to the lowermost reinforcing rods 31. Securing elements 35, such as hook bolts, are engaged at their lower ends with the ties 34. The securing elements 35 pass upwardly through the bridges 22 and through the bars 20 ofthe frame 18. Brackets 36 are mounted at their inner ends on the reinforcing rods 31 which connect thle cross bars 32 at their place of crossing.

Each bracket 36 is sustainedby a brace 37 extended downwardly to one of the bars 32. The openings 17 in the top of the mold are adapted for the reception of brackets 36 and the braces 37.

In. practical operation, ythe movable top sections 15 are opened and the mold is filled with concrete, as shown at 38. The nuts on the upper ends of the securing elements or hook bolts 35 are removed, and the bolts 28 are released from the feet 24 of the bridges 22. Thereupon the fram-e 18 may be removed. The ends l0, the sides 7, and the parts 8, 12 and 15 of the mold may be removed, either together or separately. The product, supported by the member 4 may be lifted out of the mold, through the instrumentality'of the eyes 71 on the ends of the member 4a. The rods 31, the barsl 32, the ties 34 and the securing elements or hook bolts 35 remain in the product, the upper ends of the hook bolts being exposed, to serve as an attaching' means for rail chair or the like. The brackets 36 project laterally from the finished product and constitute a means whereby one stringer, through the instrumentality of any suitable connecting means (not shown), may be united to another stringer.

In Figure 4, the base 39 is of the form her-einbefore described, the stringere appearing at 40. The base 39 has a marginal rib 41 carrying suspension devices 42. The body of the mold comprises endsI 43 and sides 44 held in place by the rib 41. The top sections 45 have suspension devices 100 and are secured to the sides 44. The frame, corresponding to the frame 18 is of the kind hereinbefore described, and is denoted by the numeral 46. The hook bolts are shown at 47, the ties at 48, the crossed bars at 49 and the bracket at 51. One of the top members 45 has a recess 53 receiving the outer end of the bracket 51. The bracket does not project entirely through the top member, as does the corresponding bracket 36 in Figurle 2. It will be understood that th-e form shown in Figure 4 includes the bridge 19, hereinbefore described.

The operation of the device delineated in Figure 4 does not differ materially from the operation of the form shown in Figure 2, aside from the fact that the form shown in F igure'4 does not have the movable top sections 15 of Figure 2.

In Figure 7, the base 54 of the` mold is constructed as hereinbefore described and is supported on stringers 55. The base has a marginal rib 56 provided with suspension devices 57. Tlte ends of the body of the mold are shown at 58, and the sides at 59, these parts being received within the ribs 56 and being supported on the plate 54. "There are suspension devices 101 on thesides 59. The frame is denoted by the numeral 61 and its bridges cooperating with thfe hook bolts 62. The ties are shown at 63,`the longitudinal reinforcing rods at64, the crossed bars at 65, the bracket at 66 and the brace at 67. One of the side members 59 is provided with a recess 68 for the reception of the bracket 66. It will be understood that the form shown in Figure 7 is' provided wit-h the end bridges 19 hereinbefore described.

hGrenlerally stated, the device is so constructed that the concrete'stringers may be formed advantageously either in the shop or on the right-ofway. The mold may be taken down readily after the concrete Stringer has set, and the stringer, when completed, will be adequately reinforced.

What is claimed is 1. In a device of the class described, a mold including a base; a body comprising sides and ends supported on the base; a frame extended between the ends and located betwelen the sides; means for securing the frame releasably to the sides; pairs of crossed members engaged at their lower ends with the sides and cooperating at their upper ends with the frame, to brace the mold; ties connecting the crossed members of the pairs adjacent to their lower ends; and securing devices forming a rel-easable connection between the ties and the frame.

2. In a device of the class described, a mold comprising a base; a body comprising sides and ends supported on the base; fixed inner and outer top sections carried by the ends, the outer top sections coacting with the sides; hinged top sections closing the space between the inner and outer top secllO tions; a frat-me releasably connected Withuthe bers, one of the top sections having an openinner top sections; crossed` braces extended ng'for the receptlonof the bracket.

between the sides and the frame to support In testimony hat I claim the foregoing 10 v the mold; ties connecting the crossed memas my own, I have hereto axed my signa- 5 bers at their lower ends; securing elements ture. v t

connecting the ties with the frame; and a bracket projectingv from the crossed memv DAVID W. BOWE. 

